DDT is a:

Related Mcqs:

1. The use DDT is banned now a days because it is:

   A. Very costly
   B. Not available
   C. Inflammable
   D. Not degraded easily

2. Spraying of DDT on crops produces pollution of

   A. Soil and water
   B. Air and soil
   C. Crops and air
   D. Air and water

3. The major drawback of DDT as a pesticide is that:

   A. Its cost of production is high
   B. It is not rapidly degraded in nature
   C. Organisms at once developed resistance to it
   D. It is significantly less effective than other pesticides

4. When DDT was applied in an orchard as a pesticide, the fruit production decreased. This happened because:

   A. DDT is a growth retardant
   B. DDT disturbed hormonal balance essential for fruit setting
   C. DDT killed the pollinating insects along with the pests
   D. DDT inhibited flowering

5. Spraying of DDT on crop produces pollution of:

   A. Air only
   B. Air and soil only
   C. Air, soil and water
   D. Air and water only

6. The maximum biological magnification of DDT through food web is seen in:

   A. Algae
   B. Bacteria
   C. Higher plants
   D. Man

7. Which of the following is likely to have the highest level of DDT deposition in its body?

   A. Eel
   B. Crab
   C. Sea gull
   D. Phytoplanktons

8. Green filler is used against which type of pollution?

   A. Air
   B. Water
   C. Soil
   D. Noise

9. The river sone receives wastes from:

   A. Refinery
   B. Distillary
   C. Textile mill
   D. Paper mill

10. A disease caused by eating fish contained by industrial waste having mercury compounds is known as:

    A. Minamata disease
    B. Osteosclerosis
    C. Bright’s disease
    D. Hashimoto disease